Nah, cops are extensions of the state they serve. Capitalist cops protect capital, and socialist cops protect proletarians.

The withering away of the state (including cops) is not something that is done by choice or decree; it's something that will happen naturally once the conditions arise.

State interference in social relations becomes, in one domain after another, superfluous, and then dies down of itself. The government of persons is replaced by the administration of things, and by the conduct of processes of production. The state is not ’abolished’. It withers away.